Is it a patent issue?

[uber_paddler]

Sony hasn't added a touch screen because they haven't released the PSP2 yet( and the PSP Go! will just be a redesign, if it even exists). They will most likely add one in the next gen PSP, but who knows.

Sony and Microsoft haven't released motion controllers yet because splitting the market halfway through a console generation is stupid as balls. Devs will be reluctant to make games for such peripherals on account of not having anywhere near the install base as a regular game for that system.

And as to the patent question, now this is pure speculation, but I'm fairly certain patents have to be pretty specific. For instance, "gaming controller which incorporates an IR-pointer technology" is a pretty broad category. That's like getting a patent on a gaming controller that uses shoulder buttons, for example. As such, if they really wanted to, Sony or MS could easily create a controller that was nearly identical, but just different enough so as not not infringe the patent.